cmd/dist: sort gohostos switch entries
cmd/dist: sort gohostos switch entries

Sort gohostos switch entries for readability/maintainability.

Change-Id: I565b0aee33e8463502faa68eaceea6f7dccca66b
Reviewed-on: https://go-review.googlesource.com/c/go/+/154379
Run-TryBot: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Tobias Klauser <0a68dd4915066ec5d3f81f75a828fee53dcc8822@gmail.com>

golang/go,golang/go,nawawi/go,golang/go,nawawi/go,josharian/go,golang/go,nawawi/go,golang/go,CAFxX/go,cloudflare/go,CAFxX/go,CAFxX/go,akutz/go,golang/go,akutz/go,josharian/go,nawawi/go,akutz/go,josharian/go,cloudflare/go,akutz/go,akutz/go,CAFxX/go,CAFxX/go,CAFxX/go,golang/go,CAFxX/go,golang/go,nawawi/go,CAFxX/go,akutz/go,akutz/go,nawawi/go,josharian/go,josharian/go,josharian/go,cloudflare/go,nawawi/go,cloudflare/go,cloudflare/go,cloudflare/go,akutz/go,josharian/go,nawawi/go,cloudflare/go,josharian/go,cloudflare/go